It has nothing to do with patchwerk-esque fights. It has to do with the fact sims have put certain classes at the bottom (or top) of respective raid damage. For example, monks were simed to be in the lower end of the middle of the pack. Many parses now show monks sitting near or at the top of Mogu'Shan fights. I'm just saying relying singularly on sims for answers is less then ideal in practical application.